Summary of issues related to animation runtime

We need to know if there are issues related to the runtime of the animation. 

Such as, "2^30 was used as a "big number" sentinel and assumed to
always be higher than the particle system's age. (QTBUG-123111) "  Problems like this lead to fatal problems in our application.

In other animations (e.g., AnchorAnimation, Animator, ParallelAnimation, ParentAnimation, PathAnimation, PauseAnimation, PropertyAction, PropertyAnimation, ScriptAction,SequentialAnimation, and particle),  whether it is related to the running time. It will cause the system to fall into an infinite loop.